CN109934481A - Project preference ordering method in a kind of planning of distribution net gridding - Google Patents
Project preference ordering method in a kind of planning of distribution net gridding Download PDFInfo
- Publication number
- CN109934481A CN109934481A CN201910170729.6A CN201910170729A CN109934481A CN 109934481 A CN109934481 A CN 109934481A CN 201910170729 A CN201910170729 A CN 201910170729A CN 109934481 A CN109934481 A CN 109934481A
- Authority
- CN
- China
- Prior art keywords
- project
- distribution network
- preference ordering
- substation
- load
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000009826 distribution Methods 0.000 title claims abstract description 77
- 238000000034 method Methods 0.000 title claims abstract description 52
- 238000007726 management method Methods 0.000 claims abstract description 8
- 230000005611 electricity Effects 0.000 claims description 36
- 230000006855 networking Effects 0.000 claims description 24
- 238000012937 correction Methods 0.000 claims description 14
- 230000003247 decreasing effect Effects 0.000 claims description 12
- 230000007423 decrease Effects 0.000 claims description 6
- 238000004458 analytical method Methods 0.000 claims description 4
- 230000007547 defect Effects 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 4
- 230000006872 improvement Effects 0.000 abstract description 2
- 239000000178 monomer Substances 0.000 description 11
- 238000011156 evaluation Methods 0.000 description 8
- 230000001131 transforming effect Effects 0.000 description 6
- 238000004364 calculation method Methods 0.000 description 4
- 230000002146 bilateral effect Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000013210 evaluation model Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000013139 quantization Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
Abstract
The present invention proposes project preference ordering method in a kind of planning of distribution net gridding, and project preference ordering method includes: high voltage distribution network project preferred method and medium voltage distribution network project preferred method in distribution net gridding planning；The high voltage distribution network project is preferred to carry out project using the project net profit model based on life cycle management；Medium pressure power distribution network project uses the triphasic middle pressure project preference ordering method that is based on, and medium pressure project preference ordering method is included: a minor sort based on item attribute priority, scored with two minor sorts invested and based on three minor sorts of Item Constrains condition based on project.The method of the present invention is simple, practical, and medium voltage distribution network project preference ordering considers the importance degree of construction project, assigns the certain score value of disparity items attribute, it is ensured that the priority of preference ordering；And consider index effect score value and index room for improvement, it is contemplated that all kinds of constraints such as project network framework and urban construction time.
Description
Technical field
The present invention relates to distribution network planning technical fields, and in particular to project is preferably arranged in a kind of planning of distribution net gridding
Sequence method.
Background technique
The planning of distribution net gridding focuses on " from bottom to top, coordinating up and down ", carries out fining distribution network planning, enhances project
The science and feasibility of scheme.For the scheme planned by distribution net gridding, it is excellent to carry out distribution network planning project
Gather sequence research can further promote power distribution network management level, push distribution network planning work orderly to carry out, improve power distribution network
Project decision is horizontal.Investment project preference ordering is the cost and capital budgeting that projects are considered according to the result of Comprehensive Evaluation
Constraint condition, is ranked up project and which project Investment Allocation, decision investment priority build.Distribution network planning project it is excellent
Gather sequence is able to solve the outstanding problems such as power distribution network project construction is unordered, determines that key target for investment provides important evidence to be reasonable.
Summary of the invention
In view of the foregoing deficiencies of prior art, the purpose of the present invention is to provide in a kind of planning of distribution net gridding
Project preference ordering method.
In order to achieve the above objects and other related objects, it is preferred to provide project in a kind of planning of distribution net gridding by the present invention
Sort method, on the basis of the planning of As-Is analysis, load prediction and high voltage substation, using the side based on three layers of macroscopical networking
Method works out distribution network structure programme, then carries out priority ordering to scheme using project preference ordering mixed method.
Optionally, described three layers macroscopical network-building method include channel networking, unit networking and main transformer networking, the channel group
Net provides the candidate channel of medium-voltage line planning, the clear feeder line group supply district of the unit networking and payload, the master
Become and presses feeder clearance programs in the clear main transformer of networking.
In order to achieve the above objects and other related objects, the present invention also provides project in a kind of planning of distribution net gridding is excellent
Select sort method, the distribution net gridding planning in project preference ordering method include: high voltage distribution network project preferred method and
Medium voltage distribution network project preferred method；
The high voltage distribution network project is preferred to carry out project using the project net profit model based on life cycle management；
Medium pressure power distribution network project, which uses, is based on triphasic middle pressure project preference ordering method,
Medium pressure project preference ordering method is included: a minor sort based on item attribute priority, is commented based on project
Divide with two minor sorts of investment and based on three minor sorts of Item Constrains condition.
Optionally, the project net income ratio model based on life cycle management are as follows:
NBi=(Bi-ε×Ii)
In formula, NBiFor project net income ratio, BiFor project yield, ε is defect value, and ε=alpha+beta+γ, α is year operation and maintenance
Rate, β are the year rate of return on assets, and γ is equipment yearly depreciation, ε=0.15, IiIt is always put into for project.
Project yield model is expressed as:
Bi=(EEi+ELi)×Ep1+ERi×Ep2
In formula, EEiIndicate the year electricity consumption for meeting newly-increased load after i-th of project is built up, ERiIndicate that i-th of project is built up
The year electric quantity loss decreasing value due to reliability raising afterwards；ELiIndicate after i-th of project is built up the year electricity due to line loss decline
Lose decreasing value；Ep1For electric energy loss marginal value；Ep2For supply interruption cost.
Optionally, which is characterized in that i-th of project meets newly-increased load year electricity consumption after building up increases load newly
Year electricity consumption EEiIt indicates are as follows:
EEi=KMatch×KIt is highΔP×Tmax
Wherein, KMatchThe accounting in power grid gross investment, K are made an investment in for power distribution networkIt is highPower distribution network is made an investment in for high voltage distribution network to throw
Accounting in money, Δ P are newly-increased load；Tmax is number of working hours based on maximum load.
I-th of project build up after due to reliability improve and year electric quantity loss decreasing value ERiIt indicates are as follows: wherein
ERi=(SAIDIi1-SAIDIi2)×Pi×ζi
Wherein, PiAnd ζiThe net capability and rate of load condensate of respectively i-th project coverage, SAIDIi1With
SAIDIi2Respectively i-th of project builds up the average annual power off time of user of its coverage of front and back；
I-th of project build up after due to line loss decline and year electric quantity loss decreasing value ELiIt indicates are as follows:
ELi=LOSSi1-LOSSi2
LOSSi1And LOSSi2Respectively i-th of project builds up its energy loss of front and back.
Optionally, for being related to the radial pattern rack of newly-increased electricity,
When substation and route are same engineering, new route and substation's income are acquired by following formula:
Bi=(EEi-ELi)×Ep1-ERi×Ep2
When substation adheres to different engineerings separately from route, the income of substation and route is acquired by following formula:
B1=I1/(I1+I2)×B
B2=I2/(I1+I2)×B
In formula, I1、I2Respectively substation project and line project are invested, and B is that substation project is always received with line project
Benefit, B1、B2Respectively substation project and line project income.
Optionally, for not being related to the high voltage distribution network rack project of newly-increased electricity,
When the project for creating spare interconnector, consider to promote power supply reliability output ER, income is asked by following formula
:
Bi=ERi×Ep2
In formula, power supply reliability electricity ER=line failure rate × fault correction time × L is reduced1× influence load；
When newly-built interconnection and original route it is equal based on for route when, consider promoted power supply reliability output ER, reduce line
Path loss consumes EL, and income is acquired by following formula:
Bi=ELi×Ep1+ERi×Ep2
In formula, power supply reliability electricity ER=line failure rate × fault correction time × L × influence load is reduced, is reduced
Line loss EL=I2×R×L1-(I/2)2×R×(L1+L2), I is original route line current, and R is resistivity, L1It is original
Line length, L2For new route length；
When creating spare contact items, consider to promote power supply reliability output ER, income is acquired by following formula:
Bi=ERi×Ep2
In formula, power supply reliability electricity ER=line failure rate × fault correction time × L is reduced11 load of × substation+
Line failure rate × fault correction time × L22 load of × substation.
As described above, project preference ordering method in a kind of distribution net gridding planning of the invention, has beneficial below
Effect:
The method of the present invention is simple, practical, and medium voltage distribution network project preference ordering considers the importance degree of construction project,
Assign the certain score value of disparity items attribute, it is ensured that the priority of preference ordering；And consider index effect score value and index improvement
Space, it is contemplated that all kinds of constraints such as project network framework and urban construction time.
A kind of preference ordering method of high pressure distribution network planning project of the invention is able to solve power distribution network project construction
The outstanding problems such as unordered determine that key target for investment provides important evidence to be reasonable.
Specific embodiment
Illustrate embodiments of the present invention below by way of specific specific example, those skilled in the art can be by this specification
Other advantages and efficacy of the present invention can be easily understood for disclosed content.The present invention can also pass through in addition different specific realities
The mode of applying is embodied or practiced, the various details in this specification can also based on different viewpoints and application, without departing from
Various modifications or alterations are carried out under spirit of the invention.It should be noted that in the absence of conflict, following embodiment and implementation
Feature in example can be combined with each other.
The present invention provides project preference ordering method in a kind of planning of distribution net gridding, is pre- in As-Is analysis, load
It surveys on the basis of high voltage substation planning, distribution network structure programme is worked out using the method based on three layers of macroscopical networking,
Then priority ordering is carried out to scheme using project preference ordering mixed method.
Described three layers macroscopical network-building method include channel networking, unit networking and main transformer networking.Channel networking is pressed in providing
The candidate channel of layout of roads；The clear feeder line group supply district of unit networking and payload；It is pressed in the clear main transformer of main transformer networking
Feeder clearance programs.
Project preference ordering method includes: high voltage distribution network project preferred method and middle pressure in distribution net gridding planning
Power distribution network project preferred method；
The high voltage distribution network project is preferred to carry out project using the project net profit model based on life cycle management；
Medium pressure power distribution network project, which uses, is based on triphasic middle pressure project preference ordering method,
Medium pressure project preference ordering method is included: a minor sort based on item attribute priority, is commented based on project
Divide with two minor sorts of investment and based on three minor sorts of Item Constrains condition.
Based on the programming method based on three layers of macroscopical networking
It is first depending on substation location, status channel, planned road network, power load distributing and radius of electricity supply, is being made full use of
There is channel and gos deep on the basis of load center channel, it is excellent by trunk channel total cost (containing investment and O&M expense) minimum principle
Change and determines channel networking plan.
Then, load available station and load characteristics clustering principle are selected based on trunk channel layout nearby, drawn according to power supply unit
The purpose and principle divided, optimization divides and coordinates the supply district of power supply unit in global scope, finally obtains unit networking
Scheme.Specific step is as follows: (1) each station supply district obtained first according to substation planning optimization, then by each substation
It is referred to as the main for station of each load in its supply district, it is main for station to obtain each load；(2 based on trunk channel layout between station, and
It is constrained in conjunction with radius of electricity supply, determines each load available substation that may be present nearby；(3) first by main for station and available station all phases
Same load is divided into a donor site, then main two donor sites opposite for station and available station are merged between a station and get in touch with power supply
Unit；(4) contact or radial pattern wiring power supply unit in station are formed.
Finally, the mode networking between using the main transformer of different substation based on 2 times contacts carries out feeder clearance distribution.
It is preferred using project is carried out based on the project net profit model of life cycle management for high voltage distribution network project.
Net income ratio model are as follows:
NBi=(Bi-ε×Ii)
In formula, ε=alpha+beta+γ；α is a year operation and maintenance rate, β is year rate of return on assets and γ is equipment yearly depreciation, defect
Value ε=0.15, Ii(Wan Yuan) is always put into for project.
In an embodiment, the earnings pattern of project be may be expressed as:
Bi=(EEi+ELi)×Ep1+ERi×Ep2
In formula, EEiIndicate the year electricity consumption for meeting newly-increased load after i-th of project is built up；ERiIndicate that i-th of project is built up
The year electric quantity loss decreasing value due to reliability raising afterwards；ELiIndicate after i-th of project is built up the year electricity due to line loss decline
Lose decreasing value；Ep1For electric energy loss marginal value, purchase electricity price 0.1 (member/kWh) can be used；Ep2It, can value 5 for supply interruption cost
(member/kWh).
In an embodiment, the year electricity consumption EE of load is increased newlyi
EEi=KMatch×KIt is highΔP×Tmax
In formula, KMatchThe accounting in power grid gross investment is made an investment in for power distribution network；KIt is highPower distribution network is made an investment in for high voltage distribution network to throw
Accounting in money；Δ P is newly-increased load, unit: MW；Tmax is number of working hours based on maximum load.
In an embodiment, i-th of project build up after due to reliability improve and year electric quantity loss decreasing value ERiIt can indicate
Are as follows:
ERi=(SAIDIi1-SAIDIi2)×Pi×ζi
PiAnd ζiThe net capability (MW) and rate of load condensate of respectively i-th project coverage；SAIDIi1With
SAIDIi2Respectively i-th of project builds up the average annual power off time of user (family h/ year) of its coverage of front and back.For newly-built
Project, SAIDIi1=0.
In an embodiment, i-th of project build up after due to line loss decline and year electric quantity loss decreasing value ELiIt can indicate
Are as follows:
ELi=LOSSi1-LOSSi2
LOSSi1And LOSSi2Respectively i-th of project builds up its energy loss (MWh) of front and back.For grassroot project,
LOSSi1=0.
In an embodiment, for being related to the radial pattern rack (biradial or single radiate) of newly-increased electricity, when substation with
When route is same engineering, consider that EL and reliability ER is lost in newly-increased electricity output EE, newly-increased route and substation.Then create line
Road+substation's output calculates as follows:
Bi=(EEi-ELi)×Ep1-ERi×Ep2
In formula, electricity output EE=SN × 50% × T is increased newlymax, increase newly route and substation loss EL=load loss ×
(S/SN)2×τmax+ no-load loss × 8760+ (A × 40%)2×R×L×τmax, the event of reliability loss electricity ERER=substation
Barrier rate × fault correction time × (SN/2)+line failure rate × fault correction time × L × (SN/2), SN are substation's appearance
Amount, setting substation's load factor as 50%, A is route rated capacity, and L is line length.
In an embodiment, for being related to the radial pattern rack (biradial or single radiate) of newly-increased electricity, when substation with
When route adheres to different engineerings separately, the output of substation and route calculates and " 1, substation and route are same engineering " calculation method
Unanimously, output is directly proportional to construction investment:
B1=I1/(I1+I2)×B
B2=I2/(I1+I2)×B
In formula, I1、I2Respectively substation project and line project are invested, and B is substation project and line project total yield
Out, B1、B2Respectively substation project and line project output.
It is spare when creating under single station Connection Mode single-stranded for the bilateral source without newly-increased electricity in an embodiment
The project of interconnector considers promotion power supply reliability output ER, and output calculates as follows:
Bi=ERi×Ep2
In formula, power supply reliability electricity ER=line failure rate × fault correction time × L is reduced1× influence load.
In an embodiment, under single station Connection Mode single-stranded for the bilateral source without newly-increased electricity, when newly-built contact
Line and original route it is equal based on for route when, consider promoted power supply reliability output ER, reduce line loss EL, output calculate such as
Under:
Bi=ELi×Ep1+ERi×Ep2
In formula, power supply reliability electricity ER=line failure rate × fault correction time × L × influence load is reduced, is reduced
Line loss EL=I2×R×L1-(I/2)2×R×(L1+L2), I is the line current of original route, and R is resistivity, L1For original
There are line length, L2For new route length.
In an embodiment, for creating spare under the single-stranded two stations Connection Mode of bilateral source without newly-increased electricity
When network project, consider to promote power supply reliability output ER, output calculates as follows:
Bi=ERi×Ep2
In formula, reduction power supply reliability electricity ER=line failure rate × fault correction time × 1 load of L1 × substation+
Line failure rate × fault correction time × 2 load of L2 × substation.
It include: a minor sort, base based on item attribute priority based on triphasic middle pressure project preference ordering method
It scores in project with two minor sorts invested and based on three minor sorts of Item Constrains condition.
Firstly, the minor sort based on item attribute priority is the necessity (solution according to project library monomer project
Certainly which kind of problem), consider the factors such as basic power supply responsibility, safety and economic benefit, determines the item of low and medium voltage distribution network project
Mesh attribute and its priority.The necessity or item attribute of project library monomer project mainly include solving equipment heavy duty, overloading, is full
The newly-increased load power reguirements of foot eliminate equipment safety hidden danger, the mating transmission project of substation, solve seize by the throat, solve low-voltage
Platform area, reinforcement grid structure, distributed generation resource access, the high damage distribution transforming of transformation etc..
Secondly, two minor sorts based on monomer project problem score and investment are in same priority, based on single
Body project problem score and investment carry out two minor sorts.Two minor sorts based on monomer project problem score and investment, it is main
Content is wanted to include the calculating of specific targets problem point value of evaluation, the calculating of item attribute score value, monomer project problem score and be based on throwing
The sequence of money adjusts.
The specific targets problem point value of evaluation includes the specific targets system and calculating specific targets problem for establishing refinement
Basic score value.
Wherein, specific targets system is in terms of network structure level, load service capability and equipment technology level three
It sets out, project specific targets system is pressed in foundation, mainly include distribution transforming attaching capacity, medium-voltage line contact rate, medium-voltage line station
Between contact rate, medium-voltage line average length, the exceeded ratio of medium-voltage line, the undesirable ratio of circuit section, medium-voltage line point
Number of segment, medium-voltage line heavy duty rate, medium-voltage line " N-1 " percent of pass, distribution transforming Rate of average load, is matched at medium-voltage line Rate of average load
Become heavily loaded rate, line insulation rate, high loss with control with changed scale and the equipment operation time limit etc..
Calculating specific targets problem basis score value is in conjunction with power distribution network practical operation situation and reflection operation status
Index properties, power distribution network evaluation index is quantized into problem score, i.e., according to Index Current situation value and target value gap, by returning
The power distribution network index of different dimensions is uniformly converted problem score by one change method, and problem score is higher, which to illustrate index more, needs as early as possible
It is promoted.The problem of specific targets, point value of evaluation was to obtain problem point value of evaluation, certain class in the attached weight coefficient of problem basic score
Index need to be promoted or reduced pressing degree.
According to the feature of specific targets such as profit evaluation model, cost type and moderate type index, using different curves and calculate public
Formula.For profit evaluation model index (such as route contact rate, medium-voltage line " N-1 " percent of pass), problem basis score value calculation formula is as follows:
In formula, y is certain profit evaluation model On Index basis score value, and x is the Index Current situation numerical value；a1To be supplied belonging to assessment object
The target goals value (required value) of the lower a kind of subregion of electricity classification, b1It (is wanted to assess the target goals value of the affiliated power classification of object
Evaluation).It such as assesses object and belongs to A class, then lower a kind of subregion is B class, and so on.
It is as follows for cost type index, such as equipment heavy-overload rate, score value calculation formula:
In formula, y is certain cost type On Index basis score value, and x is the Index Current situation numerical value；a2To be supplied belonging to assessment object
The target goals value (required value) of the lower a kind of subregion of electricity classification, b2It (is wanted to assess the target goals value of the affiliated power classification of object
Evaluation).
For moderate type index (interval type index), problem basis score value calculation formula is as follows:
In formula, y is certain moderate type On Index score value, and x is the Index Current situation numerical value；a3, d be the index marginal value；b3、c
For the index section (required value) to match with assessment area economic development.
It includes the relevance and each category of calculating identified project between attribute and specific targets that the item attribute score value, which calculates,
Mesh attribute score value.Relevance between item attribute and specific targets is that a certain intermediate item attribute is implemented in analysis, can be specific to which
Index Influence is larger, and then determines relevance (predominantly strong association).Single item attribute and specific targets can be one-to-one or
One-to-many corresponding relationship.Such as a certain item attribute " solving equipment heavy-overload ", " distribution transforming attaching appearance can be largely influenced
Amount ", " medium-voltage line average length ", " the undesirable ratio of circuit section ", " medium-voltage line Rate of average load ", " middle crimping
Road heavy duty rate ", " medium-voltage line N-1 percent of pass ", " distribution transforming Rate of average load ", " distribution transforming heavy duty rate " and " operation the time limit " etc..Meter
All kinds of item attribute score values are calculated, is one or more specific targets score values based on every intermediate item attribute under corresponding, is calculated
The quantization score value of such item attribute.
The monomer project problem score, the corresponding one or more item attributes of each monomer project in planned project library
(a monomer project often only corresponds to an item attribute in actual items library).The project category that some monomer project is related to
Property score value be added, obtain the score of the monomer project, and be ranked up.
The sequence adjustment based on investment, being may be identical multiple for score in the same item attribute priority
Monomer project, is ranked up according to project investment.
Finally, when three minor sorts based on Item Constrains condition are based on grid structure constraint, preliminary preparation
Between constraint, urban planning time-constrain and the time adjustment constraint etc. Item Constrains condition carry out medium voltage distribution network project row three times
Sequence.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology all without departing from the spirit and scope of the present invention, carries out modifications and changes to above-described embodiment.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should be covered by the claims of the present invention.
Claims (7)
1. project preference ordering method in a kind of planning of distribution net gridding, which is characterized in that As-Is analysis, load prediction and
On the basis of high voltage substation planning, distribution network structure programme is worked out using the method based on three layers of macroscopical networking, then
Priority ordering is carried out to scheme using project preference ordering mixed method.
2. project preference ordering method in a kind of distribution net gridding planning according to claim 1, which is characterized in that institute
Stating three layers of macroscopical network-building method includes channel networking, unit networking and main transformer networking, and the channel networking provides medium-voltage line rule
The candidate channel drawn, the clear feeder line group supply district of the unit networking and payload, in the clear main transformer of main transformer networking
Press feeder clearance programs.
3. a kind of project preference ordering method in distribution net gridding planning, which is characterized in that in distribution net gridding planning
Project preference ordering method includes: high voltage distribution network project preferred method and medium voltage distribution network project preferred method；
The high voltage distribution network project is preferred to carry out project using the project net profit model based on life cycle management；
Medium pressure power distribution network project, which uses, is based on triphasic middle pressure project preference ordering method,
Medium pressure project preference ordering method include: a minor sort based on item attribute priority, based on project scoring with
Two minor sorts invested and three minor sorts based on Item Constrains condition.
4. project preference ordering method in a kind of distribution net gridding planning according to claim 3, which is characterized in that institute
State the project net income ratio model based on life cycle management are as follows:
NBi=(Bi-ε×Ii)
In formula, NBiFor project net income ratio, BiFor project yield, ε is defect value, and ε=alpha+beta+γ, α is year operation and maintenance rate, β
For the year rate of return on assets, γ is equipment yearly depreciation, ε=0.15, IiIt is always put into for project.
Project yield model is expressed as:
Bi=(EEi+ELi)×Ep1+ERi×Ep2
In formula, EEiIndicate the year electricity consumption for meeting newly-increased load after i-th of project is built up, ERiIndicate after i-th of project is built up by
It is improved and year electric quantity loss decreasing value in reliability；ELiIndicate after i-th of project is built up the year electric quantity loss due to line loss decline
Decreasing value；Ep1For electric energy loss marginal value；Ep2For supply interruption cost.
5. project preference ordering method in a kind of distribution net gridding planning according to claim 4, which is characterized in that institute
State the year electricity consumption EE for meeting the newly-increased load of year electricity consumption of newly-increased load after i-th of project is built upiIt indicates are as follows:
EEi=KMatch×KIt is highΔP×Tmax
Wherein, KMatchThe accounting in power grid gross investment, K are made an investment in for power distribution networkIt is highIt is made an investment in power distribution network investment for high voltage distribution network
Accounting, Δ P is newly-increased load；Tmax is number of working hours based on maximum load.
I-th of project build up after due to reliability improve and year electric quantity loss decreasing value ERiIt indicates are as follows: wherein
ERi=(SAIDIi1-SAIDIi2)×Pi×ζi
Wherein, PiAnd ζiThe net capability and rate of load condensate of respectively i-th project coverage, SAIDIi1And SAIDIi2Point
Not Wei i-th of project build up front and back its coverage the average annual power off time of user；
I-th of project build up after due to line loss decline and year electric quantity loss decreasing value ELiIt indicates are as follows:
ELi=LOSSi1-LOSSi2
LOSSi1And LOSSi2Respectively i-th of project builds up its energy loss of front and back.
6. project preference ordering method in a kind of distribution net gridding planning according to claim 5, which is characterized in that right
In being related to the radial pattern rack of newly-increased electricity,
When substation and route are same engineering, new route and substation's income are acquired by following formula:
Bi=(EEi-ELi)×Ep1-ERi×Ep2
When substation adheres to different engineerings separately from route, the income of substation and route is acquired by following formula:
B1=I1/(I1+I2)×B
B2=I2/(I1+I2)×B
In formula, I1、I2Respectively substation project and line project are invested, and B is substation project and line project total revenue, B1、
B2Respectively substation project and line project income.
7. project preference ordering method in a kind of distribution net gridding planning according to claim 6, which is characterized in that right
In not being related to the high voltage distribution network rack project of newly-increased electricity,
When the project for creating spare interconnector, consider to promote power supply reliability output ER, income is acquired by following formula:
Bi=ERi×Ep2
In formula, power supply reliability electricity ER=line failure rate × fault correction time × L is reduced1× influence load；
When newly-built interconnection and original route it is equal based on for route when, consider promoted power supply reliability output ER, reduce route damage
EL is consumed, income is acquired by following formula:
Bi=ELi×Ep1+ERi×Ep2
In formula, power supply reliability electricity ER=line failure rate × fault correction time × L × influence load is reduced, reduces route
EL=I is lost2×R×L1-(I/2)2×R×(L1+L2), I is original route line current, and R is resistivity, L1For original route
Length, L2For new route length；
When creating spare contact items, consider to promote power supply reliability output ER, income is acquired by following formula:
Bi=ERi×Ep2
In formula, power supply reliability electricity ER=line failure rate × fault correction time × L is reduced11 load of × substation+route
Failure rate × fault correction time × L22 load of × substation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910170729.6A CN109934481A (en) | 2019-03-07 | 2019-03-07 | Project preference ordering method in a kind of planning of distribution net gridding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910170729.6A CN109934481A (en) | 2019-03-07 | 2019-03-07 | Project preference ordering method in a kind of planning of distribution net gridding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109934481A true CN109934481A (en) | 2019-06-25 |
Family
ID=66986632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910170729.6A Pending CN109934481A (en) | 2019-03-07 | 2019-03-07 | Project preference ordering method in a kind of planning of distribution net gridding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109934481A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111553534A (en) * | 2020-04-30 | 2020-08-18 | 贵州电网有限责任公司 | Grid supply area division method for power supply and electronic network of power distribution network |
| CN113049919A (en) * | 2021-03-23 | 2021-06-29 | 绍兴大明电力设计院有限公司 | Method and system for identifying diversity of medium-voltage feeder line power supply load characteristics |
| CN113222472A (en) * | 2021-06-04 | 2021-08-06 | 国网宁夏电力有限公司银川供电公司 | Power distribution network grid optimization division method and system based on load clustering algorithm |
| CN113743866A (en) * | 2021-08-27 | 2021-12-03 | 广东电网有限责任公司 | Exit management method, device, equipment and medium for investment projects |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105205573A (en) * | 2015-10-27 | 2015-12-30 | 国网福建省电力有限公司 | Planned project selecting and sequencing method comprehensively taking basic power supply responsibility of power network enterprise into consideration for low and medium voltage distribution network |
| CN105868891A (en) * | 2016-03-24 | 2016-08-17 | 国网辽宁省电力有限公司经济技术研究院 | Optimizing and ordering method for power distribution network planning projects |
| CN107742167A (en) * | 2017-10-19 | 2018-02-27 | 重庆星能电气有限公司 | The accurate planing method of middle voltage distribution networks based on three layers of macroscopical networking constraint |
-
2019
- 2019-03-07 CN CN201910170729.6A patent/CN109934481A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105205573A (en) * | 2015-10-27 | 2015-12-30 | 国网福建省电力有限公司 | Planned project selecting and sequencing method comprehensively taking basic power supply responsibility of power network enterprise into consideration for low and medium voltage distribution network |
| CN105868891A (en) * | 2016-03-24 | 2016-08-17 | 国网辽宁省电力有限公司经济技术研究院 | Optimizing and ordering method for power distribution network planning projects |
| CN107742167A (en) * | 2017-10-19 | 2018-02-27 | 重庆星能电气有限公司 | The accurate planing method of middle voltage distribution networks based on three layers of macroscopical networking constraint |
Non-Patent Citations (2)
| Title |
|---|
| 余松等: "中压配电网规划项目优化排序混合方法", 智慧电力, vol. 46, no. 1, pages 93 - 99 * |
| 王敬宇等: "基于三层宏观组网约束的中压配网精准规划", PROCEEDINGS OF 2018 3RD INTERNATIONAL CONFERENCE ON ELECTRICAL ENGINEERING, MECHANICAL ENGINEERING AND AUTOMATION（ICEEMEA2018）, pages 182 - 214 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111553534A (en) * | 2020-04-30 | 2020-08-18 | 贵州电网有限责任公司 | Grid supply area division method for power supply and electronic network of power distribution network |
| CN111553534B (en) * | 2020-04-30 | 2024-04-05 | 贵州电网有限责任公司 | Grid supply division method for power distribution network |
| CN113049919A (en) * | 2021-03-23 | 2021-06-29 | 绍兴大明电力设计院有限公司 | Method and system for identifying diversity of medium-voltage feeder line power supply load characteristics |
| CN113222472A (en) * | 2021-06-04 | 2021-08-06 | 国网宁夏电力有限公司银川供电公司 | Power distribution network grid optimization division method and system based on load clustering algorithm |
| CN113743866A (en) * | 2021-08-27 | 2021-12-03 | 广东电网有限责任公司 | Exit management method, device, equipment and medium for investment projects |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109934481A (en) | Project preference ordering method in a kind of planning of distribution net gridding | |
| CN105762792B (en) | The configuration method of capacity of distribution transform per family based on user behavior | |
| Yuan et al. | Smart grids in China | |
| Esmaili et al. | Multi-objective optimal charging of plug-in electric vehicles in unbalanced distribution networks | |
| CN107038530A (en) | A kind of power distribution network overall planning method and system | |
| Nazar et al. | Multiobjective electric distribution system expansion planning using hybrid energy hub concept | |
| CN102063563B (en) | Network-province-local integrative bus load predicting method | |
| CN106127377A (en) | A kind of intelligent grid multiple-energy-source comprehensive coordination level evaluation method | |
| CN102609792B (en) | A kind of extra-high voltage alternating current-direct current power transmission mode is suitable for system of selection and device thereof | |
| CN108520330A (en) | A kind of probabilistic power distribution network medium-voltage line differentiation planing method of consideration load prediction error | |
| CN104953652A (en) | Control method for ordered charging of electromobile | |
| CN104766140A (en) | Layered and segmented modularized power grid scheduling method | |
| CN105046449A (en) | Evaluation method based on gridding power distribution network | |
| CN106952027A (en) | A kind of 10kV distribution network lines plan access capacity computational methods | |
| CN103093391A (en) | City power distribution network arranging method | |
| CN111950106A (en) | Power supply grid and unit optimization partitioning method based on global overall planning | |
| CN109191009A (en) | A kind of method and system of pair of distribution net gridding programme comprehensive assessment | |
| CN110535129A (en) | A kind of distribution network planning method under energy internet | |
| CN108711878A (en) | Consider the photovoltaic plant polymorphic type component capacity collocation method of power producing characteristics | |
| CN108808664A (en) | A kind of urban power network planning method considering sub-area division optimization operation | |
| CN112541618A (en) | Active power distribution network planning method based on gridding and storage medium | |
| CN108280599A (en) | A kind of agriculture distribution input and output appraisal procedure based on public service value models | |
| CN115759440A (en) | High-permeability new energy consumption and power grid adaptability planning method under double-carbon background | |
| CN103279661A (en) | Substation capacity optimal configuration method based on mixed quantum evolutionary algorithm | |
| CN108665133A (en) | A kind of construction method and system of distribution system operational efficiency evaluation model |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |